1995: (27th September): Trees 6, 8, 9, 21, 109, 112, 116, 119, 121, 129 and 134 removed. Thinned to fit in with district plans to thin all the oak in the valley and to create “glades” to encourage natural regeneration. (pers.comm. Durrant, 1994).

A notable deterioration in mean tree crown density from 72% in 1995 to 45% in 2005 observed in oak trees at the Grizedale Level II site. The decline in density is associated with severe defoliation by Tortrix caterpillars.